Method of making hinges



April 9, 1929- J. w. WELSH ET AL METHOD 0F MAKING HINGES Filed July 3. 1922 JfZZ/iZZOTESZ ffeaen'ciAJ/ereas @0765 A l449/s/7 @y WM M Patented Apr. 9, 1929.

UNlTED STATES PATENT OFFICE.

JAIvIES W. WELSH AND FREDERICK A. STEVENS, OF PROVIDENCE, RHODE ISLAND.

ASSIGNORS, BY MESNE ASSIGNMENTS, TO BA'USCH AND LOMB OPTICAL COMPANY.

OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

METHOD OF IVIAKING HINGES'.

Application filed July 3, 1922. Serial No. 572,506.

The present invention relates to methods of manufacturing hinges, and more particularly l'iinges adapted for use with articles of delicate construction, like ophthalmic mountings.

The object of the invention is to provide an improved hinge of the above-described character which shall be very etlicient inoperation and cheap to make.

With this end in view, the invention consists of the improved method of making hinges hereinafter described, illustrated in the accompanying drawings and defined in the appended claims.

In the drawings, Fig. 1 is a fragmentary perspective view of an ophthalmic mounting embodying the present invention; Fig. 2 is a section of the same, taken upon the line 22 01 Fig. 1, looking in the direction of the arrows; Figs. 3, at, 5 and 6 illustrate successive steps in the manufacture of one of the hinge element-s; Fig. 7 is a section taken upon the line 7-7 of Fig. 6, looking in the direction of the arrows; Figs. 8, 9 and 10 illustrate successive steps in the manufacture of the other hinge element; and Fig. 11 is a section taken upon the line 11- 11 of Fig. 10, looking in the direction of the arrows. V

The invention is for illustrative purposes shown in connection with a spectacle mounting comprising a lens-holding frame member 2 and temple members 4-, constituted of plastic, non-metallic material like celluloid, zylonite or other composition. The temples 4 are pivotally connected to the lens-holding frame 2 by hinges comprising hinge plates 6 and 8 that are pivoted together at 10. One taco 9 of each of the nonauetallic members is recessed, thebottom wall of the recess 12 being substantially fiat and the recess being shown provided with longitudinally extending walls 1 1 that may be strai ht and parallel, if desired, and that are connected. by a transversely extending wall 16. There may be a wall 1'? opposed to the wall 16 or the recessmay be open-ended, as desired. The hinge plates 6 and 8 are similarly substantially flat and are provided with walls 18 that are connected by a wall 20. The hinge plates and the recesses 12 are so shaped that the bin plates will fit tightly in the recesses, the hinge plates lying flat against the bottom flat walls of the recesses, with the walls 18 in contact with the walls 14, and the wall 20 in contact with the wall 16. The walls 14, 16, 18 and 20 are made blunt to prevent ro tat-ion or twisting of the hinge plates within the recesses 12. The hinge plates are provided with beveled wings 2 1- along the walls 18 and a beveled wing 26 along the wall 20 connecting the beveled wings 24. The win s 2+1 and 26 are continuous and offset from the inner face 28 of the hinge plate. The hinge plate, after being fitted into position in the recess 12, is forced home by pressure, causing the beveled wings to bite or wedge into, and become embedded within the non-metallic material. The non-metallic material being plastic, it becomes compressed or wedged into the channel 30, between the wings, etfecting a very tight joint. The parts are held together by a single rivet or screw 22, shown screwed into the screw-threaded bore 34- of the hinge plate, and then upset by pressure applied to the opposite ends of the screw. The head 32 of the screw is thus forced into position, flush with the face 38 of the non-metallic member, and the body of the screw is caused to bulge out, Fig. 2, etfecting a very tight union of the parts.

The ophthalmic mounting described above constitutes no part of the present invention, and the invention may be embodied as readil in other articles. The essential novelty o the invention resides in the improved method of making the hinge above described. The hinge plates 8 are made from a metal bar provided with a plate portion 92 and an upstanding portion 94, These bars are cut transversely, as indicated by dotted lines in Fig. 3, and portions are cut away at the sides of the upstanding portion 9a to produce an article such as is shown in Fig. 4. In this article, the width of the plate portion is greater than the width of the upstanding portion, and the margin projects beyond the latter, on both sides thereof, as indicated at 96. The projecting marginal portions 96 are now swaged at right angles to the plane of the plate portion, as illustrated in Fig. 5, to produce the wings 24 and 26, after which the plate portion is provided with the screwthreaded bore 34- and the upstanding portion is drilled at- 98. A portion 5 of the hinge plate is reduced in thickness to permit bend ing the upstanding portion relative to the plate portion, thereby, in the case of ophthalmic mountings,'to provide for angular-1y adjusting the temple 4:.

The first step in the manufacture of the hinge plate 6 is to stamp out of sheet metal a blank such as is shown in Fig. 8,- having a plate portion 100 and two earportions 102.

The ear port-ions are drilled at 104 and bent at right angles into the positions shown in Fig. 9. Marginal portions 106 oi the plate portion 100 are then swaged, in the same manner as described above in connection with the marginal portions 96, to produce similar wing portions 2% and 26. The hole 34 is then bored, completing the hinge plate 6, as illustrated in Figs. 10 and ll. A pintle.

10. passes through the perforations 98 and 10 i to'connect the hinge plates together.

A very. etlicient article is thus produced at every small cost.

The invention is not, of course, restricted to the exact embodiment that is illustrated therein, but in capable of modification withplate portion to produce beveled wings, bending the ear portions at right angles to the blank plate portion, perforating the up standing portion and the ear portions, and mounting a pintle in the perforations of the upstanding portion and the ear portions.

2. The method of making a hinge element of the plate portion to produce beveledwings.

3. The method of making a hinge element that comprises providing an element having a body portion and a portion projecting from the body portion, swaging the body portion to produce beveled wings, and at taching the second-named portion to another hinge element. I 1 i I at. The method of making a hinge that comprises cutting transversely a. bar having a plate portion andan upstanding portion, providing a sheet blank having a plate portion and two car portions, swaging the margin of one otthe plate portions out of the plane of the said one plate portion to produce bel vel wings, bending the ear portions at rightangles to the blank. plate portion, perforating the HPStEIDCllDg portion and the ear portions, and mounting a pintle in the pert'orationsv ot' the upstanding portion and the ear portions to hinge the upstanding portion and the ear port-ions together.

. 5. The method of: making a hinge element that comprises providing anelement having a plate-likebody portion and a portion projecting from the body portion and by which the hinge element is adapted to be hinged,

and swaging a portion (a? the body portion.

out of the plane oft-he plate-like body portion to produce an embedding portion. 7

In testimony whereof, we have hereunto H subscribed our names this 24hr day of June, 1922.

JAMES W. WnLsir FREDERICK A. srnvnns. 

